/*****************************************************************************

Copyright (c) 1995, 2021, Oracle and/or its affiliates.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.

This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation.  The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License, version 2.0, for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA

*****************************************************************************/

/**************************************************//**
@file include/srv0start.h
Starts the Innobase database server

Created 10/10/1995 Heikki Tuuri
*******************************************************/

#ifndef srv0start_h
#define srv0start_h

#include "univ.i"
#include "log0log.h"
#include "ut0byte.h"

// Forward declaration
struct dict_table_t;

#ifdef NDEBUG
# define RECOVERY_CRASH(x) do {} while(0)
#else
# define RECOVERY_CRASH(x) do {						\
	if (srv_force_recovery_crash == x) {				\
		fprintf(stderr, "innodb_force_recovery_crash=%lu\n",	\
			srv_force_recovery_crash);			\
		fflush(stderr);						\
		_exit(3);						\
	}								\
} while (0)
#endif /* NDEBUG */

/** Log 'spaces' have id's >= this */
#define SRV_LOG_SPACE_FIRST_ID		0xFFFFFFF0UL

/** If buffer pool is less than the size,
only one buffer pool instance is used. */
#define BUF_POOL_SIZE_THRESHOLD		(1024 * 1024 * 1024)

/*********************************************************************//**
Parse temporary tablespace configuration.
@return true if ok, false on parse error */
bool
srv_parse_temp_data_file_paths_and_sizes(
/*=====================================*/
	char*	str);	/*!< in/out: the data file path string */
/*********************************************************************//**
Frees the memory allocated by srv_parse_data_file_paths_and_sizes()
and srv_parse_log_group_home_dirs(). */
void
srv_free_paths_and_sizes(void);
/*==========================*/
/*********************************************************************//**
Adds a slash or a backslash to the end of a string if it is missing
and the string is not empty.
@return string which has the separator if the string is not empty */
char*
srv_add_path_separator_if_needed(
/*=============================*/
	char*	str);	/*!< in: null-terminated character string */
#ifndef UNIV_HOTBACKUP
/****************************************************************//**
Starts Innobase and creates a new database if database files
are not found and the user wants.
@return DB_SUCCESS or error code */
dberr_t
innobase_start_or_create_for_mysql(void);
/*====================================*/
/****************************************************************//**
Shuts down the Innobase database.
@return DB_SUCCESS or error code */
dberr_t
innobase_shutdown_for_mysql(void);

/********************************************************************
Signal all per-table background threads to shutdown, and wait for them to do
so. */
void
srv_shutdown_table_bg_threads(void);
/*=============================*/

/*************************************************************//**
Copy the file path component of the physical file to parameter. It will
copy up to and including the terminating path separator.
@return number of bytes copied or ULINT_UNDEFINED if destination buffer
	is smaller than the path to be copied. */
ulint
srv_path_copy(
/*==========*/
	char*		dest,		/*!< out: destination buffer */
	ulint		dest_len,	/*!< in: max bytes to copy */
	const char*	basedir,	/*!< in: base directory */
	const char*	table_name)	/*!< in: source table name */
	MY_ATTRIBUTE((nonnull, warn_unused_result));

/**
Shutdown all background threads created by InnoDB. */
void
srv_shutdown_all_bg_threads();

/** Get the meta-data filename from the table name for a
single-table tablespace.
@param[in]	table		table object
@param[out]	filename	filename
@param[in]	max_len		filename max length */
void
srv_get_meta_data_filename(
	dict_table_t*	table,
	char*		filename,
	ulint		max_len);

/** Get the encryption-data filename from the table name for a
single-table tablespace.
@param[in]	table		table object
@param[out]	filename	filename
@param[in]	max_len		filename max length */
void
srv_get_encryption_data_filename(
	dict_table_t*	table,
	char*		filename,
	ulint		max_len);

/** Log sequence number at shutdown */
extern	lsn_t	srv_shutdown_lsn;
/** Log sequence number immediately after startup */
extern	lsn_t	srv_start_lsn;

/** TRUE if the server is being started */
extern	bool	srv_is_being_started;
/** TRUE if SYS_TABLESPACES is available for lookups */
extern	bool	srv_sys_tablespaces_open;
/** TRUE if the server was successfully started */
extern	ibool	srv_was_started;
/** TRUE if the server is being started, before rolling back any
incomplete transactions */
extern	bool	srv_startup_is_before_trx_rollback_phase;

/** TRUE if a raw partition is in use */
extern	ibool	srv_start_raw_disk_in_use;

/** UNDO tablespaces starts with space id. */
extern	ulint	srv_undo_space_id_start;

/** Shutdown state */
enum srv_shutdown_t {
	SRV_SHUTDOWN_NONE = 0,	/*!< Database running normally */
	SRV_SHUTDOWN_CLEANUP,	/*!< Cleaning up in
				logs_empty_and_mark_files_at_shutdown() */
	SRV_SHUTDOWN_FLUSH_PHASE,/*!< At this phase the master and the
				purge threads must have completed their
				work. Once we enter this phase the
				page_cleaner can clean up the buffer
				pool and exit */
	SRV_SHUTDOWN_LAST_PHASE,/*!< Last phase after ensuring that
				the buffer pool can be freed: flush
				all file spaces and close all files */
	SRV_SHUTDOWN_EXIT_THREADS/*!< Exit all threads */
};

/** At a shutdown this value climbs from SRV_SHUTDOWN_NONE to
SRV_SHUTDOWN_CLEANUP and then to SRV_SHUTDOWN_LAST_PHASE, and so on */
extern	enum srv_shutdown_t	srv_shutdown_state;
#endif /* !UNIV_HOTBACKUP */

#endif
